将颜色转换为图像？
我不知道我应该如何处理它，但是如果我（在我的 mac 应用程序中）有一个 NSView 网格，用户可以更改每个网格的颜色，是否可以翻译它，所以现在我已经用户给每个像素指定颜色，将其制作成可导出的图像？
老实说，我想不出还有什么办法可以做到这一点。我不想继续前进，意识到我走了一条相当愚蠢的道路。
我的想法是我将有一个用户可以绘制的正方形网格，每个正方形都有一种颜色，一个正方形代表最终图像中的一个像素。因此，他们就像用油漆桶填充每个油漆桶一样进行绘画，然后将其导出到实际的图像文件中。
非常感谢任何帮助，谢谢。
Im not sure how else I should approach it, but if I was to (in my mac application) have a grid of NSViews, which the user can change the colour of each, is it possible to then translate this, so now I have been given a colour for each pixel by the user, make this into an exportable image?
I honestly can't think of how else to do this. I don't want to go ahead an realise I have taken a rather foolish path.
The idea is I will have a grid of squares which the user can paint, a colour in each square, a square representing a pixel in the final image. So they paint with like a paint bucket filling each one, then export it into an actual image file.
Any help much appreciated, thanks.
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
对于您正在做的事情来说，
NSViews网格听起来确实很重。为什么不编写一个自定义视图来检查鼠标位置并适当地修改数据呢？然后，您可以编写一个自定义绘图方法来填充自定义视图，并且可以使用完全相同的绘图方法来写入可以导出的NSImage。你需要做一些数学计算。对于每个“像素”，在相应的
NSColor上调用-set，然后使用NSBezierPath的-fillRect方法。它可能会帮助您拿出铅笔和铅笔。论文计算出直方图原点和直方图的数学公式尺寸。检查 http://developer.apple.com如果您从未做过自定义绘图，请 /library/mac/#documentation/Cocoa/Conceptual/CocoaDrawingGuide/Introduction/Introduction.html 寻求帮助 前。其实没那么糟糕，只是需要一点点阅读。 :)
A grid of
NSViewssounds really heavy for what you're doing. Why not write one single custom view that checks the mouse position and modifies the data appropriately? Then you'd write a custom drawing method to fill the custom view, and you could use the same exact draw method to write to anNSImagewhich you could export.You'll need to do a bit o' math. For each "pixel", call
-seton the appropriateNSColor, then useNSBezierPath's-fillRectmethod. It may help you to get out a pencil & paper to figure out the math for the rect origins & sizes.Check http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CocoaDrawingGuide/Introduction/Introduction.html for help if you've never done custom drawing before. It's really not that bad, just takes a little reading. :)